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The Stable Isotope Laboratory is equipped with a Thermo Delta V Advantage isotope ratio mass spectrometer (IRMS) coupled to a range of peripherals.
Peripherals include: i) A Kiel IV carbonate preparation device, ii) a Gasbench II & CTC Analytics auto-sampler for automated carbonate and solution isotopic analyses, iii) a Thermo Isolink CN Elemental Analyser and Conflo IV for C/N ratios, weight %C, weight %N, δ13C, δ15N. We have a carbonate roasting device and an offline gas purification line for working with less conventional samples.
We measure an abundance of marine and terrestrial carbonates (δ13C, δ18O); waters and pore solutions (δD, δ18O); organic matter (δ13C, δ15N, %C, %N, C/N); δ13C of dissolved inorganic carbon (DIC) in solutions; δ13C, δ18O in enamel samples for archaeology projects.
Our instruments cater for a wide range of solid sample masses (from ~ 20 to 100’s ug) depending on sample availability and homogeneity. Solution measurements are made on 0.5 mL solution (or less, where necessary). In addition to conventional geological measurements we undertake specific projects (e.g. measuring chemical reaction rates with carefully enriched isotopic solutions). All measurement runs are tailored to user requirements and are assessed for precision and accuracy using internationally recognised standards.
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